To reinstall the Microsoft Task Manager:

1.Click Start , click Run , and then type the following command:
%systemroot%\inf

2.Click OK to open the INF folder.

3.Locate the file mstask.inf

Right-click the file, and then click Install . This will reinstall the files that Search needs to proceed normally.

You will be asked to place your windows XP cd rom in the drive.

Note# I have only tried on XP Pro